Nonproliferation
3 items tagged “Nonproliferation”
Articles
Explainers
Who Has the Most Nuclear Weapons? Complete 2025 Ranking
Who has the most nuclear weapons in 2025? Russia leads with ~5,580 warheads, followed by the United States with ~5,044. Full ranking of all 9 nuclear-armed states, historical trends, and who is expanding.
What Is the IAEA and What Do They Do?
The International Atomic Energy Agency (IAEA) is the world's nuclear watchdog, responsible for verifying that countries use nuclear energy peacefully. Learn how IAEA inspections work and why the agency matters for preventing nuclear proliferation.
